CVE-2026-62643

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 84% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 20, 2026

Advisory Details (5)

Auto-updated Sep 15, 2026
Patch available. Sources: github_commit, github_release.
generic

Security updates 1.6.17 and 1.7.2 released

https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2
github_release Patch Available

Roundcube Webmail 1.7.2

Patch available: roundcube/roundcubemail 1.7.2

https://github.com/roundcube/roundcubemail/releases/tag/1.7.2
github_release Patch Available

Roundcube Webmail 1.6.17

Patch available: roundcube/roundcubemail 1.6.17

https://github.com/roundcube/roundcubemail/releases/tag/1.6.17
github_commit

commit 6d69e094d55d (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 6d69e094d55d — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/6d69e094d55d3a9a84dfb36edf6ca985311f0c1c
github_commit

commit 294c7da6e728 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 294c7da6e728 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786

Vendor Advisories for CVE-2026-62643(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
roundcube1.4.11+dfsg.1-4 ... 1.4.15+dfsg.1-1~deb11u2~bpo10+1 (18 versions)1.4.15+dfsg.1-1+deb11u10—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
roundcube1.6.1+dfsg-1 ... 1.6.5+dfsg-1~deb12u1 (17 versions)1.6.5+dfsg-1+deb12u10—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
roundcube1.6.11+dfsg-1 ... 1.6.16+dfsg-1 (10 versions)1.6.17+dfsg-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
roundcube1.6.11+dfsg-1 ... 1.6.16+dfsg-1 (6 versions)1.6.17+dfsg-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 88× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 329 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 10:04 UTCGHSA enrichment
  4. 2026-09-18 04:54 UTCEG score recompute
  5. 2026-09-18 04:54 UTCGHSA enrichment
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-14 11:02 UTCGHSA enrichment
  9. 2026-09-14 07:09 UTCGHSA enrichment
  10. 2026-09-14 03:18 UTCGHSA enrichment
  11. 2026-09-13 23:27 UTCEG score recompute
  12. 2026-09-13 23:27 UTCGHSA enrichment
  13. 2026-09-13 16:28 UTCGHSA enrichment
  14. 2026-09-13 11:51 UTCGHSA enrichment
  15. 2026-09-13 07:53 UTCGHSA enrichment
  16. 2026-09-12 17:10 UTCEG score recompute
  17. 2026-09-12 17:10 UTCGHSA enrichment
  18. 2026-09-12 13:18 UTCGHSA enrichment
  19. 2026-09-12 07:28 UTCGHSA enrichment
  20. 2026-09-12 01:45 UTCEG score recompute
  21. 2026-09-12 01:45 UTCGHSA enrichment
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 09:37 UTCEPSS rescore
  24. 2026-09-08 22:01 UTCEPSS rescore
  25. 2026-09-08 01:44 UTCEG score recompute
Show 75 more
  1. 2026-09-08 01:44 UTCGHSA enrichment
  2. 2026-09-07 16:01 UTCEPSS rescore
  3. 2026-09-06 17:50 UTCEG score recompute
  4. 2026-09-06 17:50 UTCGHSA enrichment
  5. 2026-09-06 13:47 UTCEPSS rescore
  6. 2026-09-06 13:46 UTCGHSA enrichment
  7. 2026-09-06 05:26 UTCGHSA enrichment
  8. 2026-09-06 01:34 UTCGHSA enrichment
  9. 2026-09-05 21:17 UTCEG score recompute
  10. 2026-09-05 21:17 UTCGHSA enrichment
  11. 2026-09-05 15:31 UTCEPSS rescore
  12. 2026-09-04 05:07 UTCEPSS rescore
  13. 2026-09-02 14:12 UTCEPSS rescore
  14. 2026-09-01 13:54 UTCEPSS rescore
  15. 2026-09-01 04:40 UTCEPSS rescore
  16. 2026-08-31 05:40 UTCGHSA enrichment
  17. 2026-08-31 00:03 UTCGHSA enrichment
  18. 2026-08-30 20:11 UTCEG score recompute
  19. 2026-08-30 20:11 UTCGHSA enrichment
  20. 2026-08-30 19:17 UTCEPSS rescore
  21. 2026-08-30 16:20 UTCGHSA enrichment
  22. 2026-08-30 10:58 UTCGHSA enrichment
  23. 2026-08-30 05:24 UTCEG score recompute
  24. 2026-08-30 05:24 UTCGHSA enrichment
  25. 2026-08-30 01:22 UTCEPSS rescore
  26. 2026-08-28 21:42 UTCEPSS rescore
  27. 2026-08-28 02:02 UTCGHSA enrichment
  28. 2026-08-27 21:33 UTCEG score recompute
  29. 2026-08-27 21:33 UTCGHSA enrichment
  30. 2026-08-27 14:25 UTCEPSS rescore
  31. 2026-08-27 13:51 UTCGHSA enrichment
  32. 2026-08-27 03:44 UTCGHSA enrichment
  33. 2026-08-26 23:36 UTCEG score recompute
  34. 2026-08-26 23:36 UTCGHSA enrichment
  35. 2026-08-26 14:46 UTCEPSS rescore
  36. 2026-08-26 12:15 UTCGHSA enrichment
  37. 2026-08-26 05:59 UTCGHSA enrichment
  38. 2026-08-26 01:44 UTCGHSA enrichment
  39. 2026-08-25 15:50 UTCEG score recompute
  40. 2026-08-25 15:49 UTCGHSA enrichment
  41. 2026-08-25 13:49 UTCEPSS rescore
  42. 2026-08-25 11:15 UTCGHSA enrichment
  43. 2026-08-25 07:22 UTCGHSA enrichment
  44. 2026-08-25 03:31 UTCGHSA enrichment
  45. 2026-08-24 23:40 UTCGHSA enrichment
  46. 2026-08-24 19:49 UTCEG score recompute
  47. 2026-08-24 19:49 UTCGHSA enrichment
  48. 2026-08-24 12:36 UTCEG score recompute
  49. 2026-08-24 12:36 UTCGHSA enrichment
  50. 2026-08-24 08:09 UTCGHSA enrichment
  51. 2026-08-24 03:48 UTCGHSA enrichment
  52. 2026-08-23 21:59 UTCGHSA enrichment
  53. 2026-08-23 18:08 UTCGHSA enrichment
  54. 2026-08-23 14:16 UTCGHSA enrichment
  55. 2026-08-23 10:25 UTCGHSA enrichment
  56. 2026-08-23 06:32 UTCGHSA enrichment
  57. 2026-08-23 02:39 UTCEG score recompute
  58. 2026-08-23 02:39 UTCGHSA enrichment
  59. 2026-08-23 00:19 UTCEPSS rescore
  60. 2026-08-22 22:48 UTCGHSA enrichment
  61. 2026-08-22 18:56 UTCGHSA enrichment
  62. 2026-08-22 15:01 UTCGHSA enrichment
  63. 2026-08-22 11:08 UTCGHSA enrichment
  64. 2026-08-22 07:15 UTCGHSA enrichment
  65. 2026-08-22 03:23 UTCEG score recompute
  66. 2026-08-22 03:23 UTCGHSA enrichment
  67. 2026-08-21 23:49 UTCEPSS rescore
  68. 2026-08-21 23:29 UTCGHSA enrichment
  69. 2026-08-21 19:33 UTCGHSA enrichment
  70. 2026-08-21 15:42 UTCGHSA enrichment
  71. 2026-08-21 11:48 UTCGHSA enrichment
  72. 2026-08-21 07:37 UTCGHSA enrichment
  73. 2026-08-21 03:45 UTCGHSA enrichment
  74. 2026-08-20 23:54 UTCEG score recompute
  75. 2026-08-20 23:54 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-62643?
CVE-2026-62643 is a critical vulnerability published on July 14, 2026. In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for…
When was CVE-2026-62643 disclosed?
CVE-2026-62643 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on July 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-62643 actively exploited?
CVE-2026-62643 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.8% of all scored CVEs.
What is the CVSS score of CVE-2026-62643?
CVE-2026-62643 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-62643?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62643, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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